<html>
<head>
	<meta charset="UTF-8">
	<meta content="IE=edge" http-equiv="X-UA-Compatible">
	<meta content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width" name="viewport">
	<title>4788：[CERC2016]Bipartite Blanket</title>
	<!-- css -->
	<link href="../css/base.min.css" rel="stylesheet">
	<link href="../css/project.min.css" rel="stylesheet">
	
	<!-- favicon -->
	<!-- ... -->
</head>
<body class="page-brand">
	<header class="header header-transparent header-waterfall ui-header">
		<ul class="nav nav-list pull-left">
			<li>
				<a data-toggle="menu" href="#menu">
					<span class="icon icon-lg">menu</span>
				</a>
			</li>
		</ul>
		<a class="header-logo header-affix-hide margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[CERC2016]Bipartite Blanket</a>
		<span class="header-logo header-affix margin-left-no margin-right-no" data-offset-top="213" data-spy="affix">[CERC2016]Bipartite Blanket</span>
	</header>
	<nav aria-hidden="true" class="menu" id="menu" tabindex="-1">
		<div class="menu-scroll">
			<div class="menu-content">
				<a class="menu-logo" href="../index.html">BZOJ离线题库</a>
				<ul class="nav">
					<li>
						<a class="waves-attach" data-toggle="collapse" href="#problems">题目</a>
						<ul class="menu-collapse collapse in" id="problems">
							<li>
								<a class="waves-attach" href="../index.html">主页</a>
							</li>
							<li>
								<a class="waves-attach" href="../list.html">题目列表</a>
							</li>
						</ul>
					</li>
					<li>
						<a class="collapsed waves-attach" data-toggle="collapse" href="#about">关于</a>
						<ul class="menu-collapse collapse" id="about">
							<li>
								<a class="waves-attach" href="../about.html">关于此项目</a>
							</li>
						</ul>
					</li>
					
				</ul>
			</div>
		</div>
	</nav>
	<main class="content">
		<div class="content-header ui-content-header">
			<div class="container">
				<h1 class="content-heading">
                [CERC2016]Bipartite Blanket                </h1>
                <p>时间限制：30s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：512MB</p>			</div>
		</div>
		<div class="container">
			<section class="content-inner margin-top-no">
				<div class="row">
					<div class="col-lg-13 col-md-13">
						<div class="card margin-bottom-no">
							<div class="card-main">
								<div class="card-inner">
									
                                <h3>题目描述</h3><p><div>在二分图中，所有点被划分成了两个不相交的集合A和B，每条边都恰好连接着某个A和某个B。一个匹配是一个边集</div>
<div>，满足没有任何两条边有相同的端点。我们称一个匹配M覆盖了点集V当且仅当V中的每个点都是M中至少一条边的端</div>
<div>点。给定一个二分图，每个点有一个正整数权值。定义一个点集的权值为其中所有点的权值之和。给定一个参数t</div>
<div>，请统计有多少点集V，满足V的权值不小于t，且V被至少一个匹配M覆盖。</div>
<div></div></p><hr/><h3>输入格式</h3><p><div>第一行包含两个正整数n,m(1&lt;=n,m&lt;=20)，分别表示A集合的点数和B集合的点数。</div>
<div>接下来n行，每行m个01字符，其中第i行第j列为1表示A_i和B_j之间有一条边。</div>
<div>接下来一行包含n个正整数v_1,v_2,...,v_n(1&lt;=v_i&lt;=10^7)，分别表示A中每个点的权值。</div>
<div>接下来一行包含m个正整数w_1,w_2,...,w_m(1&lt;=w_i&lt;=10^7)，分别表示B中每个点的权值。</div>
<div>最后一行包含一个正整数t(1&lt;=t&lt;=4*10^8)，表示参数t。</div>
<div></div></p><hr/><h3>输出格式</h3><p><div>输出一行一个整数，即满足条件的点集个数。</div>
<div></div></p><hr/><h3>样例输入</h3><pre>3 3
010
111
010
1 2 3
8 5 13
21</pre><hr/><h3>样例输出</h3><pre>3
HINT
3个集合分别为{a1,a2,b2,b3}、{a3,b2,b3}、{a2,a3,b2,b3}。</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
								</div>
							</div>
						</div>
					</div>
				</div>
				
				
			</section>
		</div>
	</main>

	<div class="fbtn-container">
		<div class="fbtn-inner">
			<a class="fbtn fbtn-lg fbtn-brand-accent waves-attach waves-circle waves-light waves-effect" data-toggle="dropdown" aria-expanded="true"><span class="fbtn-text fbtn-text-left">Menu</span><span class="fbtn-ori icon">apps</span><span class="fbtn-sub icon">close</span></a>
			<div class="fbtn-dropup">
				<a class="fbtn fbtn-brand waves-attach waves-circle waves-light waves-effect" href="../list.html" target="_self"><span class="fbtn-text fbtn-text-left">题目列表</span><span class="icon">menu</span></a>
				<a class="fbtn fbtn-green waves-attach waves-circle waves-effect" href="../index.html" target="_self"><span class="fbtn-text fbtn-text-left">返回主页</span><span class="icon">home</span></a>
				<a class="fbtn waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/submitpage.php?id=4788" target="_blank"><span class="fbtn-text fbtn-text-left">提交代码</span><span class="icon">send</span></a>
				<a class="fbtn fbtn-orange waves-attach waves-circle waves-effect" href="http://www.lydsy.com/JudgeOnline/wttl/wttl.php?pid=4788" target="_blank"><span class="fbtn-text fbtn-text-left">试题讨论</span><span class="icon">chat</span></a>
				
			</div>
		</div>
	</div>

	<!-- js -->
	<script src="../js/jquery.min.js"></script>
	<script src="../js/base.min.js"></script>
	<script src="../js/project.min.js"></script>
</body>
</html>